Malicious PDF — malware analysis report

Static analysis result for SHA-256 469bc249012cfe1d…

MALICIOUS

PDF

77.3 KB Created: 2021-02-09 17:45:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 642727d345b887a2fb4ef05cf6f3a5c4 SHA-1: b929e7e814acb3ff0091f51d5b15380be0d8b081 SHA-256: 469bc249012cfe1d16eb2a8eb0054d50fbb5fec1e69a97e1fb3a902f2ae99157
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating the presence of an external URI and a visual download button. The embedded URL, https://maypoin.ru/123?utm_term=service+manual+canon+speedlite+580ex+ii, suggests a phishing lure disguised as a service manual to trick users into downloading a payload. No scripts were extracted, but the overall pattern points to a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://maypoin.ru/123?utm_term=service+manual+canon+speedlite+580ex+ii PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4412902/normal_5ff1b5be688b0.pdfIn PDF document text
    • http://menazubuta.iblogger.org/kayn_jungle_build_guide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459057/normal_5ffc7124bcc17.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482230/normal_5ff95e62c2cfb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446280/normal_600c6a7dc2f6c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462059/normal_5fd97dd2f169b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465907/normal_60007bbea5a4b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xinudigiwuwa.epizy.com/fizobaxodilavodoxadituzak.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/b_ed_application_form_karnataka.pdfIn PDF document text
    • https://s3.amazonaws.com/farefasejikap/riwalobapupatipafuwun.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/cantidad_de_coliformes_totales_en_agua_potable.pdfIn PDF document text
    • http://wijinap.rf.gd/42809967846.pdfIn PDF document text
    • http://putojoner.rf.gd/daddy_s_hands_holly_dunn_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/church_event_flyer_template_word.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF043 5908 bytes
SHA-256: cdf8048678ae73f8d004374720ffbb1406a0bee1dd7c88f9a84e2b32485eaf11
font_01_sfnt_off0001044c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1044C 10584 bytes
SHA-256: 6373ef5bcffe64a7ff81f59807965ccd0de80d13358081d4dd0e6859d6e9f613

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